Which tool is essential for ensuring a secure electrical connection in conduit systems?

In conduit systems, ensuring a secure electrical connection is crucial for safety and functionality. The use of lock nuts and bushings is essential because they provide a reliable method for joining conduit fittings to conduits, securing the assembly against vibration, moisture, and environmental factors that could compromise connections.

Lock nuts are threaded fasteners that secure conduit fittings to junction boxes or enclosures, preventing loosening over time. Bushings serve as protective elements that help shield wiring from sharp edges within the conduit and provide smooth transitions to avoid damage to insulation. This combination ensures that the electrical connections remain intact and safe, which is vital in maintaining the integrity of the entire electrical system.

Other choices such as cable ties, electrical tape, and screwdrivers, while useful in various tasks related to electrical work, do not offer the same level of security and reliability for connections within conduit systems. Cable ties are typically used for organizing and securing loose wires, electrical tape is more suited for insulation, and screwdrivers are tools for fastening. However, none provide the specific securing and protective functions that lock nuts and bushings do in a conduit installation.